Hydrogen chloride is a gas at room temperature - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Question 5
Hydrogen chloride is a gas at room temperature.
The diagram shows the outer shell electrons in a molecule of hydrogen chloride.
(i) Give the name of the type of bo... show full transcript
Worked Solution & Example Answer:Hydrogen chloride is a gas at room temperature - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Step 1
Give the name of the type of bond between the hydrogen and chlorine atoms in the molecule.
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Answer
The bond between the hydrogen and chlorine atoms in a molecule of hydrogen chloride is a covalent bond. This type of bond involves the sharing of electron pairs between atoms.
Step 2
Give the formula of a molecule of hydrogen chloride.
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Answer
The formula of a molecule of hydrogen chloride is HCl. This indicates that it consists of one hydrogen atom and one chlorine atom.
Step 3
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
A property of hydrogen chloride is that it C has a low boiling point. Hydrogen chloride is a small molecular compound, which contributes to its low boiling point.
Step 4
Write the balanced equation for the reaction.
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Answer
The balanced equation for the reaction between hydrogen and fluorine is:
ightarrow 2HF$$
This shows that one molecule of hydrogen combines with one molecule of fluorine to produce two molecules of hydrogen fluoride.
